From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: Re: [PATCH] PM / suspend: Always use deepest C-state in the "freeze" sleep state Date: Mon, 12 May 2014 16:08:36 +0200 Message-ID: <5370D5E4.5040001@linaro.org> References: <2548502.zJ1no3NhRc@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-wg0-f47.google.com ([74.125.82.47]:36091 "EHLO mail-wg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756705AbaELOI3 (ORCPT ); Mon, 12 May 2014 10:08:29 -0400 Received: by mail-wg0-f47.google.com with SMTP id x12so6955047wgg.30 for ; Mon, 12 May 2014 07:08:28 -0700 (PDT) In-Reply-To: <2548502.zJ1no3NhRc@vostro.rjw.lan> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" , Linux PM list Cc: Linux Kernel Mailing List , Zhang Rui , Aubrey Li On 05/05/2014 12:51 AM, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki > > If freeze_enter() is called, we want to bypass the current cpuidle > governor and always use the deepest available (that is, not disabled) > C-state, because we want to save as much energy as reasonably possibl= e > then and runtime latency constraints don't matter at that point, sinc= e > the system is in a sleep state anyway. > > Signed-off-by: Rafael J. Wysocki > --- > > This is on top of https://patchwork.kernel.org/patch/4071541/ . > Wouldn't make sense to revisit play_dead instead ? --=20 Linaro.org =E2=94=82 Open source software fo= r ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog